<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
    <div id="app">`
        <input type="checkbox" v-model="myState">
    </div>
    <script>
        new Vue({
            el:"#app",
            data:{
                state:true
            },
            /* computed中的值是依赖于data的 */
            computed:{
                myState:{
                    get(){
                        console.log("state");
                        return this.state;
                    },
                    set(value){
                        console.log("set");
                        this.state = value
                    }
                }
            }
        })
    </script>
</body>
</html>